How to make inventions; or, Inventing as a science and an art (1893)
Thompson, Edward P · New York, D. Van Nostrand co · leaf 158
s. The accompanying cut shows an electric brake inventionwhich sold for $30,000 cash and other considerations. Brief :Consists in employing the momentum of the train as the brakingpower, and in applying and releasing said power by electricity.The amount of electrical energy needed to stop a train… … 144CHAPTER XVI. Simultaneous Inventions, The preceding chapter illustrates that Gatling would havebeen credited, both by honor and money, through his method ofboat propulsion, if Ericsson had never been born. The elementof time, alone, lost him his right to a patent. The system ofduplex and…
Inventions
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
